The bronze used in Lincoln cents is almost entirely composed of copper (95%). It is denser than brass, which has a lower copper content. So a brass cent should weigh less than a standard 3.11 gram bronze piece, not more.
Not trying to rain on your parade because it could be an off-metal planchet strike. The higher weight actually diminishes that likelihood however.
Not trying to rain on your parade because it could be an off-metal planchet strike. The higher weight actually diminishes that likelihood however.
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